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scm0 process consuming high cpu

edited Mar 11, 2018 5:00AM in Database Tuning (MOSC) 8 commentsAnswered

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Oracle Database 12c Enterprise Edition Release 12.2.0.1.0 - 64bit Production              0

PL/SQL Release 12.2.0.1.0 - Production                                                    0

CORE    12.2.0.1.0      Production                                                                0

TNS for Linux: Version 12.2.0.1.0 - Production                                            0

NLSRTL Version 12.2.0.1.0 - Production                                                    0

We have a 3-node RAC cluster.  Node 1 of our cluster shows that the scm0 process is consuming extremely high cpu.  On our other two nodes, this is using extremely low cpu.  OEM shows that this process is consuming 15% of our overall cpu time in the database.  It seems that it has run amok on node 1

I am only able to find a very little bit of documentation on this process.  Any thoughts on what this process is doing and why it is such a high consumer on node 1?

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